- Isostructurality of quinoxaline crystal phases: The interplay of weak hydrogen bonds and halogen bonding
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Tailoring the physical properties of molecular crystals though the construction of solid solutions requires the existence of isostructural crystals. Simple substitutions of a given molecular framework can give a range of different crystal structures. A se
- Bowen, Richard D.,Fenwick, Nathan W.,Saidykhan, Amie,Seaton, Colin C.,Telford, Richard
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p. 7108 - 7117
(2021/10/26)
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- Quinoxaline derivatives and application thereof in organic light-emitting devices
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The present invention discloses a novel organic compound having a structure represented by the formula shown in the specification, wherein L1 and L2 are each independently selected from one of a single bond, a substituted or unsubstituted C6-C30 arylene group, and a substituted or unsubstituted C3-C30 heteroarylene group, wherein Ar1 is selected from one of substituted or unsubstituted C3-C30 heteroaryl groups containing at least two heteroatoms, and Ar2 is selected from one of substituted or unsubstituted C6-C30 aryl groups and substituted or unsubstituted C3-C30 heteroaryl groups. When the compound provided by the invention is used as a luminescent material in an OLED device, excellent device performance and stability are shown. The invention also discloses an organic light-emitting device adopting the compound with the general formula.
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Paragraph 0045-0049
(2020/06/20)
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- NHC-initiated cascade, metal-free synthesis of quinoxaline derivatives under solvent-free conditions
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2,3-Diaryl quinoxaline derivatives have been efficiently synthesized by cascade, metal-free, and solvent-free reaction of aryl aldehydes with aryl 1,2-diamines initiated by N-heterocyclic carbene. Compared with reported methods, this procedure has the advantages of easy work-up, reduced energy consumption, and elimination of solvent waste, hazards, and toxicity. A group of potentially bioactive compounds has been prepared for biomedical screening.
- Gao, Lijiu,Liu, Rui,Yu, Chenxia,Yao, Changsheng,Li, Tuanjie,Xiao, Zhaoxin
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p. 2131 - 2138
(2014/05/06)
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- One-pot synthesis of quinoxalines starting from aldehydes under metal-free conditions
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An efficient and convenient synthesis of quinoxalines from easily available aldehydes was performed as a one-pot procedure in good to excellent yields under metal-free conditions, via sequential benzoin condensation, aerobic formation of benzils and condensation of the latter with 1,2-diaminobenzenes.
- Hu, Zhong-Yuan,Du, Ding,Tang, Wei-Fang,Lu, Tao
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p. 2262 - 2264
(2012/08/07)
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- The synthesis of quinoxalines by condensation reaction of acyleins with o-phenylenediamine without solvent under microwave irradiation
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A convenient synthetic method for 2,3-disubstituted quinoxalines is described. Heating the aryl or alkyl acyloins and o-phenylenediamine in a microwave oven for 3-6 minutes affords 2,3-disubstituted quinoxalines in 20-94% yields.
- Juncai, Feng,Yang, Liu,Qinghua, Meng,Bin, Liu
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p. 193 - 196
(2007/10/03)
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